Resin composition, method for producing modified hydrogenated block copolymer, and molded article

A resin composition, comprising:

• a component (I) of a modified block copolymer (I) that has a polymer block (A) mainly comprising a vinyl aromatic compound unit, and a polymer block (B) mainly comprising a conjugated diene compound unit, and has 0.01% by mass or more of a polar group;
• and
• a component (II) of a resin (II) having a polar group (excluding the component (I)),
• wherein a mass ratio between the component (I) and the component (II), (I)/(II), is 1/99 to 70/30, and
• the component (I) satisfies the following conditions (i) to (iii):
• <Condition (i)>
• a content of the vinyl aromatic compound unit in the modified block copolymer (I) is 1 to 30% by mass;
• <Condition (ii)>
• the polymer block (B) comprises a 1,2-bond and/or 3,4-bond derived unit (a), and a 1,4-bond derived unit (b), and a content of the 1,2-bond and/or 3,4-bond derived unit (a) is 1 to 55% assuming that a total content of the polymer block (B) is 100%;
• and
• <Condition (iii)>
• the polymer block (B) comprises an alkenyl monomer unit (a1) resulting from hydrogenation of the 1,2-bond and/or 3,4-bond derived unit (a), and an alkenyl monomer unit (b1) resulting from hydrogenation of the 1,4-bond derived unit (b), and a total content of the alkenyl monomer unit (a1) and the alkenyl monomer unit (b1) is 5 to 55% assuming that the total content of the polymer block (B) is 100%.